Nook Tablet downgrade to version 1.4.0

1.  Get acclaim-update.zip (find it here: http://goo-inside.me/roms/TeamKomin/nooktablet/acclaim_update.zip).
2. Copy it to a micro-SD card.
3. Insert the card in the Nook Tablet.
4. Make sure that wi-fi is turned on.
5. Go to settings -> device Info -> Erase & Deregister Device
6. Click the Deregister… button.
7. Sit back and enjoy.

Once the magic happen, you will be in version 1.4.0 (verify this in settings -> device info -> about your NOOK).

Now – turn off the wi-fi. If you leave it on, the Nook will update itself to version 1.4.1 within 20 minutes or so.

Next – enabling sideloading.